Diaphragm-horn.



UNITED-Y STATES PATENT oFFIoE.

LOU-IS CHOILEIIOFPARIS, FRANCE, ASSIGNOR, BY MESNE ASSIGNMENTS, T0 LOVELL- MUCONNELL MANUFACTURING COMPANY, A CORPORATION OF l'lall'A VTAIBE.l t

l DIAPHBAGM-HORN.

Specicatln of Letters Patent.

Paten ted Feb. 29, 1916.

To all whom t may concern? Be it known that I, Loms CH'OLLET, a citizen of the Republic of France, and resident of Paris, France, have invented certain new and useful Improvements in Dia phraUm-Horns, of which the followingpis. a speci mation. 1 A n This invention relatesV to certain improvements in diaphragm horns, and more"- articularly to that type in which there 1s a high speed rotor having a series of impact members adapted to successively engageV with the diaphragm or a Wear-piece on the latter. In horns of this character, it has been proposed to provide the rotor with a series of impact members rotatable about an axis normal to the diaphragm and so supported that they may recede from the diaphragm in a direction substantially parallel to the'axis of rotation, to facilitate the starting of the rotor and to prevent interference when the diaphragm is vibrating with the maximum amplitude and the' diaphragm androtor are out of synchronism. In such a construction if rotatableballs'be employed as the im act members, the wenn on the impactmem rs may be,distributed-4 but it does not permit anydi'stributiono weanona lizxedwear-piece the diaphragm`y and im Y of'comparatiyety yhold the balls inoperative' Positlmf My' invention myolvesanhrrangement "of` parts, wherebyithe airis4 of rotation *ma be arranged parallel to the diaphragme the rotor may be bodily adjustod lengthwise' of its axis to regulate the impact, and `the impact members may have thedesired resilient or free movement in respect to said axis and the wear-piece. l

One important forml which my invention may assume involves a mounting of the impact members so that theyggma move in a p direction parallel to the diap ragm upon striking the wear-piece and a positlonir'g of theimpact members by springs also acting parallel with the axis of rotation. The mpact members upon starting the rotor or in Ycase of interference, may move parallel to the aiisrof rotation butaround one side of the wear-piece.' By mounting the impact members between oppositely-disposed springs. the natural imperfections in the adjustment of the device and the slight irregularity in the length and size of the springs may be such that certain of the impact be-deflected around the impact member on one' side and some on the other, so as to distribute the wear on the impact member to both sidesV ofthe latter rather than to the top. lThus the length of life of the impact member may be lengthened and. its effectiveness increased.

By arranging the impact members upon axlesA s aced apart about the axis of the rotor, ree spacemayc be left between the.. impact members so that the rotor upon starting may acquire a slight headway before" the first impact member strikes the wearpiece. This importent where a small electric motor is employed the source of. power. The starting is further facilitated by the fact that as the first impact member engages the wear-piece, it may sli l end wise and pass the wear ieee, though t e spring which is co resse by such action may be an extremel i ht one and merely serve to members upon engaging the diaphragm may normally ho d t e impact members in proper position lengthwise of its axle. As the rotin;

viatequiree speed, the tendency'ofthe impat ymembers to beileiected around the wearwillbee'liueed andthe impact meni-i` rs willdelivr blows with full force'. At

of the axles ofthe impact members to the axisof the rotor-,eer b ma ing the axles of theimpact members exible,

lthejaotion olf/centr w tiene for holding the amplia membefspvia f operative 'positionrv In' slr const-ructiomsy` t e 'ma be'fomittdrad the i, mem ITS held tween, um@ le xmms Of in 08.@ 0f om no? ifngal force,

;or other impact member.

lilacilitarc its atlailn" ."snpport, l emploiy i. 'ir cl ct axles, the impart members may be rigid on the axles and the bending or bodily movement ot the axles relied upon. In Yease of either flexible or stilll axles, the impact members may be rigidly secured to their respective axles, and an endwiee sliding of the axles against the action of the springs may constitute the desired resilient mounting. The impact members may he ot' any desired form but preferablj.v are circular in cross section and of reduced diameter toward one or both ends.

The cross-section longitudinally. that is, in planes containing the axis of the rotor, Should preferably atl'ord contacting surfaces inclined laterally, that is, inclined with respect to said axis, so that the dynamic reaction ot impact upon the Wear-pieee ma7 have a component longitudinally olB said axis. A simple form of such member is, a ball or bead which may be a sphere` The arrangement and form of the cooperating surfaces of diaphragm, wear-piecc and rotor is such that the longitudinal component of reaction of impact tends to force said impact member against he spring which is arranged so as to normally tend to maintain said member against such reaction and in operative relation to the diapl agin Wenpieee. I

By forming the 'mpaet members and wear-piece with suriaees rounded or inelined in the direction of the length of the axis 0f rotation. the rotor and diaphragm may be readily adjusted so as to secure the desired thrust on the diaphragm hy moving the rotor axially. This provides a fery simple and etlicient means and avoids 'the necessity of an absolutely accurate drilling of the shaft bearings of the rotor. This means of adjusting is equally applicable even though the rotor assume any one of a large number ot different forms; for instance7 the rotor may include merely a head with radhilly-*disposed pockets in the periphery there-o1" and eauh containing a ball 'The impact memhers will he thrown out by Centrifugal force to tfc limiting position, and this position may oe deuierinined hy av et. f circling 'the head 'r by liangws or other enlaigefnenf on the impact memifers ylhcr rotor is oreicrably driven hy 1in ele-"trie motor circrtly on the main shalt :mi adjarent to me edge of the diag'ihragrn.

In ordtr to sr'fip:

"" the rntiro torn and o: wthcr wfnci fir/)ter ahly as to reduce to :niznniunt the iii loosening artion iinpaitcd to the serens during the opwration al tlwv llet'ercnee to he had Connects direel to the umh* one. vo i "inf or ence indicate corresponding parts in all the figur-cs. and in whieh- Figure l is a face View ot a horn con struetcd in accordance with my invention; Fig. .2 is a `4ide View thereof. a portion oi' the casing and the diaphragm being shown in Section: lfig. Il is a .side elevation ot" a slightlyY ditlerent torni ot rtm1 troni that `shown in Fig. 2: Fig, l i a tai-p plan vier of the rotor shown in l'; l. a portion thereof heim;r broken away: 5 isa side 'vir-w o? one ol the axles vforming a part of the rotor: and Fig, l? is a side View ot' o-ne of the heads or impact nicinlwrs forming` thc rotor.

ln En) improved constipation. l inaploy a rotor u mounted upon a shalt o rivcn hy an cleririr motor in a casing f. lz: the torni ot rotor illustrated in Fig. L). l employ two dislis \\'l1icl1f-npan` hctucon them a plu ralil)Y ot' llexilulr metallic axles 'tht-sn axles are prt-lcraldy :substantially paralltl to the shaft and have thcir cnd supported in thil disks so as lo lcare trl-e spacc hetnccn the axles. Thcy arc shown in Vig. as comY prising lhfxildc \\'ircs. thc center portions oiv which mar more latcrallY. duw to thc l'lcxiY hilitiy ol the Vwirc. llpon each axlc or pivot is an ioxpatt nnndwr 71. prefer-aldi' in iin"- l'ornx o' a ball i'rt-c to rsldc loi il udnally of its rcsgm we axh-A lilach hall 1e lscld internn ite ol: the erde o the axlc bj.' teo light springs cach abutting against the impact incinhcr and against one ot' the disks J.

The rotor is rufio' i wird on thc but it pieleiahli .instalar lengthwi the shaft. .\n r suitable means may he ein` [.loyed for seeming the rotor to thc shaft. 'out in thc i'orni illustiated l provide the shaft mth .screw threads and loch' the rotor between tryo nutsr on thc sha l't.

Vl`hc entire rotor is snpy'iortod within a easing which is held solid in respect to thc motor easing r' lo.' an intermediate column f. through which the .shift exY tcnde. 'the easing /t is p: ovided on its troni side with an annular llaogi.l er i part or The electric motor may he 'anna .l to any sullahle source oi rurre t and ni. n rotated at hiffh .speed will "pire a rapid snrlilows hf.' in "n'fpiece 0. fll

out. liv ema.

hers are im as to strike the Wear-piece, and the parts may be so designed that with the rotor traveling at very lovv speed, the impact members Will not touch the Wear-piece. Thus the rotor may be very easily started and as soon as it acquires speed, the impact members will automatically come into operation. The impact members are free to slide length- Wise of the axles, and in case of'interference some of them may pass above and some below, so that the Wear on the wear-piece will be distributed. The degree of engagement may be varied by using more or less exible axles or may be secured by a longitudinal adjustment of the rotor. The springs may be comparatively strong, so that there will be a longitudinal movement only to slightly aid the balls or impact members in getting out of the path of the returning diaphragm When the rotor and diaphragm are out of synchronism. F

The entire signal may be supported in various dierent Ways, but preferably l emA ploy a bracket y having yoke arms engaging with opposite sides of the motor casing c and having a base adapted to be held on any support by suitable screws or other fastening means. This bracket by engaging with the motor casing is not subjected to the same vibration as it would be were it connected directly to the casing z, adjacent the edge of the diaphragm, and thus the liability ot'A loosening the fastening screws by the vibration, is materially reduced.

instead of making the axles flexible, as `I shown in F ig. 2, l may make them in the form of solid rods c as in the form shown in Figs. 3 to 6, inclusive. Here the rods are mounted in two disks d', fl, and ,the impact members 7 are tree to move longitudinally of the rods under the action of springs g', g". The -impact members may, if desired, be

' rigid on therods and the rods loose in the disks so as.v to -mov,e longitudinally within their bearings. instead otthis, the impact members may have openings therethrough some larger than the rods and may move out, due solely to eentrilugaly force, and in this case' the springs may be omitted and the collars mounted on the rods for holdirlg the impact members against longitudinal 1novement".l

Haring thus described my invention, l claim as new and desire to secure'by Letters Patent:

1. A horn or signal including a diaphragm having a wear piece, a rotor having its axis substantially parallel to said dia; phragm, including a plurality of impact members independently movable axially of said rotor, said members and said wear pieceA having surfaces inclined in the direction of the length of' the axis fof said rotor, and yielding means ten/.ling to hold said impact members against axial `movement.

2. A horn or signal having a diaphragm and a rotor rotatable about an axis substantially parallel to said diaphragm, said rotor including t o heads or disks and a series of relatively-movable impact mem- 7 bers supportedv therebetween, together with yielding means tending to hold said impact members against axial movement.

3. A rotor for horns or signals, including two substantially parallel disks or heads, spaced apart at a Xed distance from each other, and a series of impact members carm ried thereby and supported therebetween, and movable toward and from said disks.

4. A rotor for horns or signals, including two substantially parallel disks or heads, and a series of impact men carried thereby and supported thor itween, and movable toward and from said disks, at fixed distances radially from the axis of said motor.

A rotor for horns or signals, including two substantially parallel disks or heads, a series of impact members carried thereby and means for resiliontly supporting them therebetween at ,fixed distances radially from the axis of Said rotor and tending to hold said impactY members in a predetermined intermediate position.

6. A rotor 'for horns or signals, including a series of substantially paralisi axles mov able bodily around the axis of rotation of the rotor7 each of said axles carrying an im pact member, together with yielding me: tending to hold said nieinbers in a pradet minedv position.

l'. A rotor for horns or signals, incl a series of substantially parallel an able bodily around the axis of rot ion the rotor, each of said axles carrying an inipact member movable longitudinally thereof..

P. A rotor for horns or signals, including lOh a series of substantially parallel axles in y? able bodily around the axis nl s the rotor, each of said asics cari?, pact member movable ic the dii length of said axles. log il 'i' means tending if "wie predetermined 9. rotor a series of sur able bodily aro'u t. the rotor, each of id aXles carry n i .u pact member resiliently supported against endwise movement, together with yielding means tending to hold said members in a predetermined position.

10. A rotor for horns or signals including a'plurality of axles movable bodiiy about the axis of rotation and normally supported substantially parallel thereto, an impact memben slidabiy mountedy upon each axle, and springsencircling said axles for posiVm tioning said. impact members thereon.

11. A rotor for horns or signals including lili) Signed at Paris, France, this twentyseventh day of June, A. D` 1912.

LOUIS CHOLLET.

n plurality of axles movable bodily about the axis of rotation and normally supported substantially arallel thereto, Aan impact member slidab y mounted on each axle, and :x ving engaging with each impact member and tending to move it. in the direction of the length of ythe axle.

lVitnesses: Y

JOHN F. MOUNT, HANsoN C. Coma. 

